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Formal specifications of EDF and EDF+


The original 1992 spec for continuous signals:
Full specification of EDF
  
The 2003 extension for (dis)continuous signals and events:
  
Full specification of EDF+
  
  Signals in EDF(+) are 2-byte integers:
How to store
longintegers and floats
 
Optional in EDF, obligatory in EDF+:
Standard texts for header and annotations, including polarity rules


Additional guidelines for programmers


EDF and EDF+: guidelines for programmers


EDF only: FAQ list